diff options
Diffstat (limited to 'hw/display/jazz_led.c')
| -rw-r--r-- | hw/display/jazz_led.c | 320 |
1 files changed, 320 insertions, 0 deletions
diff --git a/hw/display/jazz_led.c b/hw/display/jazz_led.c new file mode 100644 index 000000000..dd5f4696c --- /dev/null +++ b/hw/display/jazz_led.c @@ -0,0 +1,320 @@ +/* + * QEMU JAZZ LED emulator. + * + * Copyright (c) 2007-2012 Herve Poussineau + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "qemu/osdep.h" +#include "qemu/module.h" +#include "ui/console.h" +#include "ui/pixel_ops.h" +#include "trace.h" +#include "hw/sysbus.h" +#include "migration/vmstate.h" +#include "qom/object.h" + +typedef enum { + REDRAW_NONE = 0, REDRAW_SEGMENTS = 1, REDRAW_BACKGROUND = 2, +} screen_state_t; + +#define TYPE_JAZZ_LED "jazz-led" +OBJECT_DECLARE_SIMPLE_TYPE(LedState, JAZZ_LED) + +struct LedState { + SysBusDevice parent_obj; + + MemoryRegion iomem; + uint8_t segments; + QemuConsole *con; + screen_state_t state; +}; + +static uint64_t jazz_led_read(void *opaque, hwaddr addr, + unsigned int size) +{ + LedState *s = opaque; + uint8_t val; + + val = s->segments; + trace_jazz_led_read(addr, val); + + return val; +} + +static void jazz_led_write(void *opaque, hwaddr addr, + uint64_t val, unsigned int size) +{ + LedState *s = opaque; + uint8_t new_val = val & 0xff; + + trace_jazz_led_write(addr, new_val); + + s->segments = new_val; + s->state |= REDRAW_SEGMENTS; +} + +static const MemoryRegionOps led_ops = { + .read = jazz_led_read, + .write = jazz_led_write, + .endianness = DEVICE_NATIVE_ENDIAN, + .impl.min_access_size = 1, + .impl.max_access_size = 1, +}; + +/***********************************************************/ +/* jazz_led display */ + +static void draw_horizontal_line(DisplaySurface *ds, + int posy, int posx1, int posx2, + uint32_t color) +{ + uint8_t *d; + int x, bpp; + + bpp = (surface_bits_per_pixel(ds) + 7) >> 3; + d = surface_data(ds) + surface_stride(ds) * posy + bpp * posx1; + switch (bpp) { + case 1: + for (x = posx1; x <= posx2; x++) { + *((uint8_t *)d) = color; + d++; + } + break; + case 2: + for (x = posx1; x <= posx2; x++) { + *((uint16_t *)d) = color; + d += 2; + } + break; + case 4: + for (x = posx1; x <= posx2; x++) { + *((uint32_t *)d) = color; + d += 4; + } + break; + } +} + +static void draw_vertical_line(DisplaySurface *ds, + int posx, int posy1, int posy2, + uint32_t color) +{ + uint8_t *d; + int y, bpp; + + bpp = (surface_bits_per_pixel(ds) + 7) >> 3; + d = surface_data(ds) + surface_stride(ds) * posy1 + bpp * posx; + switch (bpp) { + case 1: + for (y = posy1; y <= posy2; y++) { + *((uint8_t *)d) = color; + d += surface_stride(ds); + } + break; + case 2: + for (y = posy1; y <= posy2; y++) { + *((uint16_t *)d) = color; + d += surface_stride(ds); + } + break; + case 4: + for (y = posy1; y <= posy2; y++) { + *((uint32_t *)d) = color; + d += surface_stride(ds); + } + break; + } +} + +static void jazz_led_update_display(void *opaque) +{ + LedState *s = opaque; + DisplaySurface *surface = qemu_console_surface(s->con); + uint8_t *d1; + uint32_t color_segment, color_led; + int y, bpp; + + if (s->state & REDRAW_BACKGROUND) { + /* clear screen */ + bpp = (surface_bits_per_pixel(surface) + 7) >> 3; + d1 = surface_data(surface); + for (y = 0; y < surface_height(surface); y++) { + memset(d1, 0x00, surface_width(surface) * bpp); + d1 += surface_stride(surface); + } + } + + if (s->state & REDRAW_SEGMENTS) { + /* set colors according to bpp */ + switch (surface_bits_per_pixel(surface)) { + case 8: + color_segment = rgb_to_pixel8(0xaa, 0xaa, 0xaa); + color_led = rgb_to_pixel8(0x00, 0xff, 0x00); + break; + case 15: + color_segment = rgb_to_pixel15(0xaa, 0xaa, 0xaa); + color_led = rgb_to_pixel15(0x00, 0xff, 0x00); + break; + case 16: + color_segment = rgb_to_pixel16(0xaa, 0xaa, 0xaa); + color_led = rgb_to_pixel16(0x00, 0xff, 0x00); + break; + case 24: + color_segment = rgb_to_pixel24(0xaa, 0xaa, 0xaa); + color_led = rgb_to_pixel24(0x00, 0xff, 0x00); + break; + case 32: + color_segment = rgb_to_pixel32(0xaa, 0xaa, 0xaa); + color_led = rgb_to_pixel32(0x00, 0xff, 0x00); + break; + default: + return; + } + + /* display segments */ + draw_horizontal_line(surface, 40, 10, 40, + (s->segments & 0x02) ? color_segment : 0); + draw_vertical_line(surface, 10, 10, 40, + (s->segments & 0x04) ? color_segment : 0); + draw_vertical_line(surface, 10, 40, 70, + (s->segments & 0x08) ? color_segment : 0); + draw_horizontal_line(surface, 70, 10, 40, + (s->segments & 0x10) ? color_segment : 0); + draw_vertical_line(surface, 40, 40, 70, + (s->segments & 0x20) ? color_segment : 0); + draw_vertical_line(surface, 40, 10, 40, + (s->segments & 0x40) ? color_segment : 0); + draw_horizontal_line(surface, 10, 10, 40, + (s->segments & 0x80) ? color_segment : 0); + + /* display led */ + if (!(s->segments & 0x01)) { + color_led = 0; /* black */ + } + draw_horizontal_line(surface, 68, 50, 50, color_led); + draw_horizontal_line(surface, 69, 49, 51, color_led); + draw_horizontal_line(surface, 70, 48, 52, color_led); + draw_horizontal_line(surface, 71, 49, 51, color_led); + draw_horizontal_line(surface, 72, 50, 50, color_led); + } + + s->state = REDRAW_NONE; + dpy_gfx_update_full(s->con); +} + +static void jazz_led_invalidate_display(void *opaque) +{ + LedState *s = opaque; + s->state |= REDRAW_SEGMENTS | REDRAW_BACKGROUND; +} + +static void jazz_led_text_update(void *opaque, console_ch_t *chardata) +{ + LedState *s = opaque; + char buf[3]; + + dpy_text_cursor(s->con, -1, -1); + qemu_console_resize(s->con, 2, 1); + + /* TODO: draw the segments */ + snprintf(buf, 3, "%02hhx", s->segments); + console_write_ch(chardata++, ATTR2CHTYPE(buf[0], QEMU_COLOR_BLUE, + QEMU_COLOR_BLACK, 1)); + console_write_ch(chardata++, ATTR2CHTYPE(buf[1], QEMU_COLOR_BLUE, + QEMU_COLOR_BLACK, 1)); + + dpy_text_update(s->con, 0, 0, 2, 1); +} + +static int jazz_led_post_load(void *opaque, int version_id) +{ + /* force refresh */ + jazz_led_invalidate_display(opaque); + + return 0; +} + +static const VMStateDescription vmstate_jazz_led = { + .name = "jazz-led", + .version_id = 0, + .minimum_version_id = 0, + .post_load = jazz_led_post_load, + .fields = (VMStateField[]) { + VMSTATE_UINT8(segments, LedState), + VMSTATE_END_OF_LIST() + } +}; + +static const GraphicHwOps jazz_led_ops = { + .invalidate = jazz_led_invalidate_display, + .gfx_update = jazz_led_update_display, + .text_update = jazz_led_text_update, +}; + +static void jazz_led_init(Object *obj) +{ + LedState *s = JAZZ_LED(obj); + SysBusDevice *dev = SYS_BUS_DEVICE(obj); + + memory_region_init_io(&s->iomem, obj, &led_ops, s, "led", 1); + sysbus_init_mmio(dev, &s->iomem); +} + +static void jazz_led_realize(DeviceState *dev, Error **errp) +{ + LedState *s = JAZZ_LED(dev); + + s->con = graphic_console_init(dev, 0, &jazz_led_ops, s); +} + +static void jazz_led_reset(DeviceState *d) +{ + LedState *s = JAZZ_LED(d); + + s->segments = 0; + s->state = REDRAW_SEGMENTS | REDRAW_BACKGROUND; + qemu_console_resize(s->con, 60, 80); +} + +static void jazz_led_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->desc = "Jazz LED display", + dc->vmsd = &vmstate_jazz_led; + dc->reset = jazz_led_reset; + dc->realize = jazz_led_realize; +} + +static const TypeInfo jazz_led_info = { + .name = TYPE_JAZZ_LED, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(LedState), + .instance_init = jazz_led_init, + .class_init = jazz_led_class_init, +}; + +static void jazz_led_register(void) +{ + type_register_static(&jazz_led_info); +} + +type_init(jazz_led_register); |